この Video あなたの言語には存在しません, で見る: English (en),
またはGoogle翻訳を使用する:  

Rural Solutions is a video series that highlights solutions to specific challenges that are common in rural areas of developing countries. Biogas provides an environmentally-friendly alternative to power rural households - but biogas digesters are costly to set up, especially in remote areas. Here is a solution to this from Kenya.